lewis



June 11, 1929. G, Q LEW|$ CUSHIONING WEAR PLATE FOR BUFFER STEMS Filed Aug. 19, 1926 Patented June 11, 1929.

UNITED STATES PATENT OFFICE.

GODRICH Q. LEWIS, OF WHEATO, ILLINOIS, ASSIGNOR T W. H. MINER, INC., GIF' CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE.

CUSHIONING WEAR PLATE FOR BUFFER STEMS.

Application filed August 19, 1926. Serial No. 130,137.

This invention relaties to cushioning wear plates for buffer stems.

An object of the invention is to provide combined wear and cushioning members to be utilized in connection with the center and side buffer stems of railway cars, and the like to eliminate noise due to vibration between the parts.

A further object of the invention is to provide cushioning members which include exterior metallic plates against which the stems bear during their' normal movements, said plates being connected together in such manner to permit limited relative movement i' thereof, and between which is interposed live rubber held under initial compression thereby, the plates bein normally held at the limit of their spreading movement and operating as wear plates which are yieldable to absorb vibration and eliminate noise.

Other and furtherebjects of the invention. will more clearly appear from the description and claims hereinafter following.

In the drawings, forming a part of this specification, Figure 1 is a fragmentary top plan view, partly in horizontal section, of a bulfing device for railway cars embodying my invention. Figure 2 is a longitudinally vertical sectional view on the line 2-2 of Figure 1. Figure 3 is a transverse, fragmentary, vertical section of the bufling mechanism center stem, taken on the line 3-3 of Figure 2, and showing the invention in elevation. And Figure 4 is a fragmentary sectional view substantially on line 4t-4 of Figure 3.

Referring to the drawings, the numeral represents the end platform of a passenger car, provided with a central pocket 11 for the reception of a shock-absorbing mechanism, indicated at 12, against which the usual center stem 13 bears, the opposite forward end ofthe stem being adapted to abut against a plate 14 mounted upon the buffer proper, indicated at- 15. The buffer 15 is supported in position by means of side stems, one of which is shown at 16, there being a coiled spring 17 disposed about the side stem 16, .in the customary manner.

The center stem 13 and side stem 16 are slidably carried by the underframe of the platform 10, which may include a forward transversely extending partition indicated at 18, which is provided with a central substantially rectangular opening 19, defined by side walls 20 and 21, top wall 22, and bottoni wall 23, the center stem 13 extending through the opening 19, the stem being of a size considerably small r than the opening as best shown in Figure The bottom wall 23 of the casting is off-set somewhat to provide a shoulder 24, and the metal of the casting to the rear ot' the n' all 22 is provided with a slot 25. The support 26 on the underframe casting may be of any suitable character to support the rear end of the stem 13 while permitting operative movements thereof. The underf'rame also has a similar arrangement for supporting the side stem 16, and since the invention is applied. to the side stem in the same manner as to the center stem the description herein will be directed to the center stem only.

rllhe combined cushioning and wear members are best shown in Figures 2 and 3 and are indicated generally by the reference characters 26 and 27. The wear member 26 as shown is of U-shaped formation, including outer and inner plates 28 and 29. The outer plate 2S may be of any suitable metal, said plate including leg portions 30'-30, extending on opposite sides of the center stem 13, and a connecting portion 31 which extends across the top of the stem 13, the plate 28 being of a size as to fit snugly against the walls 20, 21 and 22 of the underframe casting. rlhe inner plate 29 is also U-shaped but smaller in size, so that the legs and connecting member thereof extend in spaced relation with respect to the legs and connecting portion of the member 28, the plate 29 being of such size as to afford suitable clearance for the stem 13. Interposed between the plates 28 and 29 is a pad of live rubber indicated at 32, said pad being substantially coextensive with the plates 28 and 29. The plates 28 and 29 are secured together by means of a plurality of rivets 33, each of which has its opposite heads countersunk in the outer surfaces of the plates 28H29, the rivets being slidably mounted in the plates so that said plates may be pressed toward each other against the pressure exerted by the pad of rubber 32, while the heads of said rivets limit spreading movement of the plates with respect to each other. The plate 29 is provided along its connecting portion with trai'isversely arranged, upwardly extending flanges 34C and 35, the flange 34 being arranged to abut against the face of the wall 22, while the other flange enters the slot 25 in the underframe casting. By this arrangement, longitudinal :ind Vlateral movement thereof is prevented.

'lhe wear member 27 is interposed between the unde Surface ot the Stem 13, and the top sur'l'ace oit the supportingl wall Q3 of the under 'traine structure. The weer member 2T includes spaced plates1 :lli und :37 laetween which it; interposed :i pail oit' rubber indicated at 39a, the platen beingI secured lteig'ether by rivets 3) which permit movement olf lthe plates toward euch other; but limit movement of said platee away "trom euch other7 and hold the rubber under 'initial comprivssion. The plate 23T le provided with en angular extension el() which extendfsdownwardly and unH der the wall 23, and in secured in poiiiliion by ineens ot a, `flange ld which :ibutii agninfit the Shoulder l; ilormed by the wall ly the above described arrangement it will be amireciated that the normal longitudinal movimiente oli the Stein 13 are perinilted; `the nurliai'iee olt `the wear plateeI adjacent `to the stem taking up the weer that will occur between the parte, and due to the nrrinigiement o't the 'iilates :ind `rubber held tl1erebetfvneen under 'initial compi-osseion, vibratory move ,ments ot the stem, both vertically :ind lateral lly, are ubnorbeifl; thereby eliminating noise which han been lound to be very objectionable in ronuection with the center and eide eterni; oit bulli'er members. Although not Shown in detail, it 'will `be allnnecialiiid that `the eide Steine nuiybe proviiiled with :in :irri `nggemeut similar to thatdescribed in connection with the een ter stein, ne the operation and lpurpose oil the device is identically the same.

llfh'ilo l have *herein shown end deeeribed what `l now coneider the,prelierred mnuner ol2 carrying out the invention7 ithe seme "ie merely illnetmtive;l und l `contemplate nll changes and modilicationsi which `come within the Scope oLt the claims appended iherete.

l Gleim:

l. ln u device olf the character described the comliinntion with e, support `prin'ided with en opening; of an element `adapted to :move through seid opening; end menus :tor absorbing vibration `oit 'aid `element .in `other directions, said meam :including live rubber under initial compi.' vision interposed between seid element find. the walls oil Suid opening.

2. ln a `railway car, l'iliecombinetion with a. bul'ler Steur; olf siiipporting;Structure :tor Suid stem, includingan opening to permit reciproczxl'ion oit said stem ;iand spaced plates sinfroundingij said Stem. and interiiioeied ibetw-een the come and the welle o'fsafid opening; live rubl'ier 'interijioeeijl between seid platen; menne connecting seid platee lier hold ingieaiid rubber un der initinl compression while pern'ritting` approach o'fisnid pinten; and means "for rnaintnining -seid platee against longitudinal movement with. reference to seid supporting structure.

3. ln ar device of the character described, the combination with a, longitudinally recillin-coal member; oilfistrueture for Supporting` Seid member 'for recipriication, Said 'etructure providing im opening, having` abutmen'ie at opposite sides thereof; Siliaced llehaped platee dispoeed about Seid member and interposed between the seme and the wallie delining;l seid oljiening, seid platee beini;l eoinleeted to limit recension with reep-,ct to eaeh etherwhile permitting; approach thereofii'; cui-ihioning )neriml interposed :bee tween seid platee; and projectione upon seid platen adepteil to engage the abutmenl'e `ou said sttucl'lu'e to prevent movement ol" Said plates; .longitudinally with reference `to said member.

Ll. All au erticleioi iiminutuctur i, eonibined cushioning; and 'wea-r vmembers icomprieinesipaoed inuten,detiniug a eelltrnlopening; Said pleiten being` connected to restrict Spreiulinfg movemei'it therebetween while permitliiii j; approach thereol said plaleeiha vin live rubber interpoei-id between them. I

Asian article ofananu'teeture,ieombined cushioning and weer pinten eomin'ieing .fipaced platen, delining a, centra lioi'iening, nnid plaies being connected to resniet -epreeiflfing movement therebetwmui while permitting approach thereof; said plates having; ounhionV- ing menne :interposed b /ween them; eaiid cushioning means beineT in thelorn'i ol live rubber held -under Ainitial comprension by said plates.

6. Ae `nn article iet' imzmufla'ctnre, coinbined cushioning end weer n'ieinber, ernnprieIg ing' spaced pleteeyeaid plnteeibeinieoi'meeted together `to r Strict lepremling movement thereof while -pern'iit'ig nppri'ineh et' the sume, suidyzplutee lmningieuebiiining menne interponed therebetween; seid cushioning; means being :in Athe fornrol live rubber held umile ini'thtl compressionby said plates.

7. An nrt-lele o't manufacture comprisingY ar pair yotieinrced relatively Amovable platee; cushioning menne in `the torino'l.2 n :live `rubberpnid lield betwveenenid plete; and filling the space therebetween, Said pad being eoextensive in length and .width with seid platee; menne tor limiting relative separetionietE eeidlplatee but ellowinn4 approach oit the suine and holding theeunliioningg'` means under initial compression; and means engaging' and confining' said cushioningmenus onl all eidee agninfit expansion in the direction of ite length and width. l

In witness that l claimy the Ltoree'oin lliav il hereunto Subncribednrv naine 'this lth'dny of August, T1926.

GOODRTCHQ, LElVS. 

